Change to minimal license enforcement

* This removes the license gem enitrely.
* Specifies the user to declare his compliance with either opensource or commercial usage.

Changelog.md

@@ -1,3 +1,13 @@
+# v0.12.0 [unreleased]
+
+  Drop the license gem, entirely. This reduces DRM in mutants code base to the absolute minimal.
+  Mutant is *still* comercial software that requires payment if used on a commercial code base!
+
+  Migration:
+
+  * Commercial users: Add `usage: commercial` to your config file (or `--usage commercial` to your CLI)
+  * Opensource users: Add `usage: opensource` to your config file (or `--usage opensource` to your CLI)
+
 # v0.11.34 2024-03-26
 
 * [#1432](https://github.com/mbj/mutant/pull/1432)

Gemfile.lock

@@ -1,18 +1,13 @@
 PATH
   remote: .
   specs:
-    mutant (0.11.34)
+    mutant (0.12.0)
       diff-lcs (~> 1.3)
       parser (~> 3.3.0)
       regexp_parser (~> 2.9.0)
       sorbet-runtime (~> 0.5.0)
       unparser (~> 0.6.9)
 
-GEM
-  remote: https://oss:Px2ENN7S91OmWaD5G7MIQJi1dmtmYrEh@gem.mutant.dev/
-  specs:
-    mutant-license (0.1.1.2.2355046999240944981729280251890364410689.5)
-
 GEM
   remote: https://rubygems.org/
   specs:
@@ -69,7 +64,6 @@ PLATFORMS
 
 DEPENDENCIES
   mutant!
-  mutant-license!
   rspec (~> 3.10)
   rspec-core (~> 3.10)
   rspec-its (~> 1.3.0)

Gemfile.shared

@@ -1,6 +0,0 @@
-# Mutant itself uses an opensource license key.
-# Scoped to https://github.com/mbj/mutant it'll
-# not be useful elsewhere.
-source 'https://oss:Px2ENN7S91OmWaD5G7MIQJi1dmtmYrEh@gem.mutant.dev' do
-  gem 'mutant-license'
-end

README.md

@@ -77,54 +77,27 @@ Labels:
 
 ## Licensing
 
-Mutant is commercial software, with a free usage plan for opensource projects.
+Mutant is commercial software, with a free usage option for opensource projects.
+Opensource projects have to be on a public repository.
 
-Commercial projects have to acquire a license per developer, with unlimited repositories
-per developer. CI usage for licensed developers is included.
+Commercial projects have to pay a monthly or annual subscription fee.
 
-Opensource projects have to acquire their free license per repository. That license will
-work for any contributor implicitly. Typically the project maintainer gets the license.
+## Opensource usage
 
-The license distribution happens through the `mutant-license` gem. Mutant installs without
-that dependency, but will not be very cooperative unless `mutant-license` is also available.
+Usage is free and does not require a signup. But it requires the code is under an
+opensource license and public. Specify `--usage opensource` on the CLI or `usage: opensource`
+in the config file.
 
-The license gem is dynamically generated per licensee and comes with a unique license gem source
-URL.
+## Commercial usage
 
-After signup for a license the following has to be added to your `Gemfile` replacing `${key}`
-with the license key and `${plan}` with `com` for commercial or `oss` for opensource usage.
+Commercial use requires payment via a subscription and requires a signup. See [pricing](#pricing) for
+available plans.
 
-```ruby
-source 'https://${plan}:${key}@gem.mutant.dev' do
-  gem 'mutant-license'
-end
-```
-
-The mutant license gem contains metadata that allows mutant to verify licensed use.
-
-For commercial licenses mutant checks the git commit author or the configured git email
-to be in the set of licensed developers.
-
-For opensource licenses mutant checks the git remotes against the licensed git repositories.
-This allows the project maintainer to sign up and not bother collaborators with the details.
-
-There are, apart from initial license gem installation, no remote interaction for
-license validation.
-
-### Getting an Opensource license
-
-As stated above: Opensource projects of any kind are free to use mutant.
-
-Just mail [me](mailto:mbj@schirp-dso.com?subject=Mutant%20Opensource%20License): Please
-include:
-
-* Just the git remote URL of your repository. Repository can be anywhere, must not be on Github, just has to be public.
-
-I do not need any more details.
+After payment pecify `--usage commercial` on the CLI or `usage: commercial` in the config file.
 
 ### Pricing
 
-**Mutant is free for [opensource use](#getting-an-opensource-license)!**
+**Mutant is free for [opensource use](#opensource-usage)!**
 
 For commercial use mutants pricing is subscription based.
 
@@ -137,18 +110,19 @@ For commercial use mutants pricing is subscription based.
 
 Costs are **per developer using mutant on any number of repositories**.
 
-Volume licenses with custom plans are available on request.
+Volume subscriptions with custom plans are available on request.
 
-Should you want to procure a commercial mutant subscription please [mail me](mailto:mbj@schirp-dso.com?subject=Mutant%20Commercial%20License).
+Should you want to procure a commercial mutant subscription please
+[mail me](mailto:mbj@schirp-dso.com?subject=Mutant%20Commercial%20License) to start the payment
+process.
 
 Please include the following information:
 
 * Your business invoice address.
 * A payment email address, if different from your email address.
 * Only for the EU: A valid VAT-ID is *required*, no sales to private customers to avoid the
   horrors cross border VAT / MOSS.
-  VAT for customers outside of Malta will use **reverse charging**.
-* *Per developer* the git author email address as returned by `git config user.email`
+  VAT for EU customers outside of Malta will use **reverse charging**.
 
 Also feel free to ask any other question I forgot to proactively answer here.
 

docs/commercial.md

@@ -6,8 +6,8 @@ Is there a trial version?
 
 There is no free trial.
 
-But mutant offers to refund the last monthly
-payment on cancellation. Basically a rolling trial on monthly plans.
+But mutant offers to refund the last monthly payment on cancellation.
+Basically a rolling trial on monthly plans.
 
 Yearly and custom plans do not offer any refunds but come with discounts.
 
@@ -35,17 +35,14 @@ This per subscription is valid for any number of private repositories.
 
 Depending on your plan subscriptions renew monthly or yearly.
 
-After purchase you get access to a custom rubygem hosted on mutants license
-server that enables mutants functionality in commercial repositories.
-
+After purchase you setup the commercial usage type in mutant
+and are ready to go.
 
 How do I determine the number of required subscriptions?
 --------------------------------------------------------
 
 Collect the git author email from each of your developers that need to use mutant.
-Use `git config --get user.email`.  Count that list.
-
-Mutant on CI will work on any commit authored by a developer in that list.
+Use `git config --get user.email`. Count that list.
 
 So a designer, who contributes to your repository, but never touches Ruby/Mutant:
 Will not be forced to get a mutant subscription.
@@ -54,35 +51,12 @@ What happens if my subsription lapses?
 --------------------------------------
 
 If your credit card cannot be charged, even after retries: The subscription will be
-considered inactive and you loose access to mutants license gem. Which prevents `bundle install`
-and adjacent commands to succeed.
+considered inactive and you loose the right to run mutant.
 
 **Please note that pricing can chance**. Once you purchase a subscription, you get that price
 forever **as long you pay on time**. If your subscription expires for a non-payment, you will lose
 that pricing and need to repurchase at current pricing.
 
-What does the license require me to do?
----------------------------------------
-
-Your purchase gets you unique access credentials for accessing the license gem which enables
-mutant on a private repository. The license requires you to keep these access credentials private.
-
-If your access credentials are ever found to be publicized:
-
-1. You get a warning email with details. You need to remove the content and
-   will get new new credentials being generated.
-   The old credentials will stop working immediately so you'll need to update your
-   `Gemfile`.
-2. If your credentials are publicized a second time, we reserve the right to permanently
-   remove access (but won't unless it's really egregious - sloppy contractors happen).
-
-Do I have to share the credentials with all of my developers?
--------------------------------------------------------------
-
-In general yes. The intention is that the license details gets checked into the
-`Gemfile`. This only gives access to mutants funcionality, your billing account is
-separate and individuall developers cannot update the subscription.
-
 Can I get a refund?
 -------------------
 
@@ -98,7 +72,6 @@ Can I request a change to the license terms?
 --------------------------------------------
 
 Mutant is sold as is. Pricing becomes negotiatable over 20 developers.
-
 License terms may be amended for even bigger customers.
 
 Disputing a Charge
@@ -133,15 +106,8 @@ Schirp DSO LTD only collects enough customer information provide its services wh
 * Per developer: The developers git author emaill address.
 * Standard HTTP logging for the license server with 14d expiry.
 
-Mutant runs exclusively on your developers machines. Or your CI. The only time mutant
-calls a service operated by Schirp DSO LTD: Is on `bundle install`. Where `bundler` sends a
-HTTP request with your license key to the license server.
-
-BTW: As mutant does NOT control the HTTP call side (bundler does instead) there cannot be any
-information leak being caused by mutant. Apart from HTTP logs at the license server.
+Mutant runs exclusively on your developers machines. Or your CI.
 
-At no point in time Schirp DSO LTD gets access to your source code, your customers data
-or other sensitive material.
 
 Should mutant gain more features that would enable features such as distributed
 analysis and reporting, these features will be opt in, with a big warning.
@@ -153,3 +119,14 @@ Customer information is never shared or sold to anyone.
 * Stripe for subscription, credit card and SEPA direct debits.
 * Transferwise for receiving SEPA and ACH transfers.
 * AWS to host the license server.
+
+At no point in time Schirp DSO LTD gets access to your source code, your customers data
+or other sensitive material.
+
+### Pre mutant 0.12 license gem.
+
+The only time mutant calls a service operated by Schirp DSO LTD: Is on `bundle install`.
+Where `bundler` sends a HTTP request with your license key to the license server.
+
+BTW: As mutant does NOT control the HTTP call side (bundler does instead) there cannot be any
+information leak being caused by mutant. Apart from HTTP logs at the license server.

docs/mutant-minitest.md

@@ -65,6 +65,7 @@ This prints a report like:
 
 ```sh
 Mutant environment:
+Usage:           opensource
 Matcher:         #<Mutant::Matcher::Config subjects: [AUOM*]>
 Integration:     Mutant::Integration::Minitest
 Jobs:            8

docs/mutant-rspec.md

@@ -38,6 +38,7 @@ This prints a report like:
 
 ```sh
 Mutant environment:
+Usage:           opensource
 Matcher:         #<Mutant::Matcher::Config subjects: [AUOM*]>
 Integration:     Mutant::Integration::Rspec
 Jobs:            8

lib/mutant.rb

@@ -109,6 +109,7 @@ module Mutant
     require 'mutant/require_highjack'
     require 'mutant/mutation'
     require 'mutant/mutation/operators'
+    require 'mutant/usage'
     require 'mutant/mutation/config'
     require 'mutant/mutator'
     require 'mutant/mutator/util'
@@ -221,7 +222,6 @@ module Mutant
     require 'mutant/config/coverage_criteria'
     require 'mutant/cli'
     require 'mutant/cli/command'
-    require 'mutant/cli/command/subscription'
     require 'mutant/cli/command/environment'
     require 'mutant/cli/command/environment/irb'
     require 'mutant/cli/command/environment/run'
@@ -255,11 +255,6 @@ module Mutant
     require 'mutant/repository/diff/ranges'
     require 'mutant/zombifier'
     require 'mutant/range'
-    require 'mutant/license'
-    require 'mutant/license/subscription'
-    require 'mutant/license/subscription/commercial'
-    require 'mutant/license/subscription/opensource'
-    require 'mutant/license/subscription/repository'
     require 'mutant/segment'
     require 'mutant/segment/recorder'
   end
@@ -363,7 +358,8 @@ class Config
       matcher:               Matcher::Config::DEFAULT,
       mutation:              Mutation::Config::EMPTY,
       reporter:              Reporter::CLI.build(WORLD.stdout),
-      requires:              EMPTY_ARRAY
+      requires:              EMPTY_ARRAY,
+      usage:                 Usage::Unknown.new
     )
   end # Config
 

lib/mutant/cli/command.rb

@@ -122,7 +122,7 @@ def banner
 
       def parse(arguments)
         Either
-          .wrap_error(OptionParser::InvalidOption) { parser.order(arguments) }
+          .wrap_error(OptionParser::InvalidArgument, OptionParser::InvalidOption) { parser.order(arguments) }
           .lmap(&method(:with_help))
           .bind(&method(:parse_remaining))
       end
@@ -176,14 +176,6 @@ def parse_remaining(remaining)
         end
       end
 
-      def parse_remaining_arguments(remaining)
-        if remaining.any?
-          Either::Left.new("#{full_name}: Does not expect extra arguments")
-        else
-          Either::Right.new(self)
-        end
-      end
-
       def parse_subcommand(arguments)
         command_name, *arguments = arguments
 

lib/mutant/cli/command/environment.rb

@@ -15,6 +15,7 @@ class Environment < self
             add_integration_options
             add_matcher_options
             add_reporter_options
+            add_usage_options
           ].freeze
 
       private
@@ -136,6 +137,20 @@ def add_reporter_options(parser)
             set(reporter: @config.reporter.with(print_warnings: true))
           end
         end
+
+        def add_usage_options(parser)
+          parser.separator('Usage:')
+
+          parser.accept(Usage, Usage::CLI_REGEXP) do |value|
+            Usage.parse(value).from_right
+          end
+
+          parser.on(
+            '--usage USAGE_TYPE',
+            Usage,
+            'License usage: opensource|commercial'
+          ) { |usage| set(usage: usage) }
+        end
       end # Run
       # rubocop:enable Metrics/ClassLength
     end # Command

lib/mutant/cli/command/environment/run.rb

@@ -9,13 +9,6 @@ class Run < self
           SHORT_DESCRIPTION = 'Run code analysis'
           SUBCOMMANDS       = EMPTY_ARRAY
 
-          UNLICENSED = <<~MESSAGE.lines.freeze
-            You are using mutant unlicensed.
-
-            See https://github.com/mbj/mutant#licensing to aquire a license.
-            Note: Its free for opensource use, which is recommended for trials.
-          MESSAGE
-
           NO_TESTS_MESSAGE = <<~'MESSAGE'
             ===============
             Mutant found no tests available for mutation testing.
@@ -34,8 +27,8 @@ class Run < self
         private
 
           def action
-            License.call(world)
-              .bind { bootstrap }
+            bootstrap
+              .bind(&method(:verify_usage))
               .bind(&method(:validate_tests))
               .bind(&Mutation::Runner.public_method(:call))
               .bind(&method(:from_result))
@@ -56,6 +49,10 @@ def from_result(result)
               Either::Left.new('Uncovered mutations detected, exiting nonzero!')
             end
           end
+
+          def verify_usage(environment)
+            environment.config.usage.verify.fmap { environment }
+          end
         end # Run
       end # Environment
     end # Command